The Ainsworth House, also known as the Greet Ranch, was built in 1886 by homesteader Frank S. Ainsworth and his wife in Big Trails, Wyoming, in the Nowood Valley of Washakie County.

The Ainsworths built the frame house after living in a tent and a log dugout.

In 1885 he returned to Iowa to marry Lucy Ann Albee and brought her back to the Bighorn Basin where they built their house.

They subsisted by cultivating the native hay of the region, which allowed them to grow sufficient fodder to withstand the severe winters.

This article about a property in Wyoming on the National Register of Historic Places is a stub.